package com.xiaoqi.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.IdWorker;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;

import com.xiaoqi.reggie.common.BaseContext;
import com.xiaoqi.reggie.common.CustomException;
import com.xiaoqi.reggie.entity.*;
import com.xiaoqi.reggie.mapper.OrderMapper;
import com.xiaoqi.reggie.service.*;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Collectors;

@Service
@Slf4j
public class OrderServiceImpl extends ServiceImpl<OrderMapper, Orders> implements OrderService {
    @Autowired
    ShoppingCartService shoppingCartService;
    @Autowired
    UserService userService;
    @Autowired
    AddressBookService addressBookService;
    @Autowired
    OrderDetailService orderDetailService;
    @Override
    public void submit(Orders orders) {
        //获取当前用户的id
        Long userId= BaseContext.getCurrentId();
        //查询当前用户的购物车数据
        LambdaQueryWrapper<ShoppingCart>queryWrapper=new LambdaQueryWrapper<>();
        queryWrapper.eq(ShoppingCart::getUserId,userId);
        List<ShoppingCart> list = shoppingCartService.list(queryWrapper);
        if (list==null||list.size()==0){
            throw new CustomException("购物车为空，不能下单");
        }
        //查询用户数据
        User user = userService.getById(userId);
        //查询地址信息
        Long addressBookId = orders.getAddressBookId();
        AddressBook byId = addressBookService.getById(addressBookId);
        if (byId==null){
            throw new CustomException("用户地址信息有误，请更新地址！");
        }
        //生成订单id
        long id = IdWorker.getId();
        AtomicInteger amount = new AtomicInteger(0);
        List<OrderDetail> orderDetails = list.stream().map((item) -> {
            OrderDetail orderDetail = new OrderDetail();
            orderDetail.setOrderId(id);
            orderDetail.setNumber(item.getNumber());
            orderDetail.setDishFlavor(item.getDishFlavor());
            orderDetail.setDishId(item.getDishId());
            orderDetail.setSetmealId(item.getSetmealId());
            orderDetail.setName(item.getName());
            orderDetail.setImage(item.getImage());
            orderDetail.setAmount(item.getAmount());
            amount.addAndGet(item.getAmount().multiply(new BigDecimal(item.getNumber())).intValue());
            return orderDetail;
        }).collect(Collectors.toList());


        orders.setId(id);
        orders.setOrderTime(LocalDateTime.now());
        orders.setCheckoutTime(LocalDateTime.now());
        orders.setStatus(2);
        orders.setAmount(new BigDecimal(amount.get()));//总金额
        orders.setUserId(userId);
        orders.setNumber(String.valueOf(id));
        orders.setUserName(user.getName());
        orders.setConsignee(byId.getConsignee());
        orders.setPhone(byId.getPhone());
        orders.setAddress((byId.getProvinceName() == null ? "" : byId.getProvinceName())
                + (byId.getCityName() == null ? "" : byId.getCityName())
                + (byId.getDistrictName() == null ? "" : byId.getDistrictName())
                + (byId.getDetail() == null ? "" : byId.getDetail()));
        //向订单表插入数据，一条数据
        this.save(orders);

        //向订单明细表插入数据，多条数据
        orderDetailService.saveBatch(orderDetails);

    }
}